To impose a 60-day moratorium on the transfer or receipt of an assault rifle, and for other purposes.

Mass Violence Prevention Reform Act This bill makes it unlawful to transfer or receive an assault rifle during the 60-day period following enactment. An individual who knowingly violates the prohibition is subject to criminal penalties. During the 60-day moratorium, the Department of Health and Human Services, the Federal Bureau of Investigation, and the Bureau of Alcohol, Tobacco, Firearms and Explosives must make recommendations to Congress: (1) on a legal definition of "assault weapon" and (2) on other policies related to firearms that are in the interest of public health.